Retaining member for retaining concrete form sheets in right-angular assembly

ABSTRACT

My invention comprises a novel cooperating yoke and rivet assembly for positively retaining right-angularly disposed concrete form sheets in such assembly for the reception of wet concrete mix for integrally forming walls of a building structure.

United States Patent Miyoji Okazaki 1328 "F" St., Oxnard, Calif. 93030746,533

July 22, 1968 Oct. 5, 1971 lnventor Appl. No. Filed Patented RETAININGMEMBER FOR RETAINING CONCRETE FORM SHEETS IN RIGHT-ANGULAR ASSEMBLY 2Claims, 4 Drawing Figs.

US. Cl 249/194, 249/219, 25/131 CP, 52/285, 189/36 Int. Cl E043 9/00Field of Search 249/ l 94,

[56] References Cited UNITED STATES PATENTS 2,427,393 9/l947 Eckel 4.l89/3b(D)X 2,898,659 8/l959 Shoemaker 249/l94 X Primary Examiner-J.Spencer Overholser Assistant Examiner-De Walden W. Jones Attorney-Wham8!. McManigal ABSTRACT: My invention comprises a novel cooperating yokeand rivet assembly for positively retaining right-angularly disposedconcrete form sheets in such assembly for the reception of wet concretemix for integrally forming walls of a building structure.

RETAINING MEMBER FOR RETAINING CONCRETE FORM SHEETS IN RIGHT-ANGULARASSEMBLY in accordance with conventional practice, the provision ofmetallic forms for molding integral right-angularly disposed buildingwalls such as sidewalls, or sidewalls and a ceiling, entails relativelycostly devices which are difficult and time consuming to assemble anddisassemble. It is also a well-known shortcoming of such forms that theright-angularly disposed form sheets tend to separate or move out oftrue right-angular relationship under the stresses imposed by thepouring and setting of the concrete mix.

It is a principal object of my invention to provide, for a concreteform, a novel yoke and rivet assembly which is readily adaptable tobeing employed to retain the form sheets in true right-angularrelationship against the stresses imposed by the pouring and setting ofthe concrete mix.

It is also an object of my invention to provide economical means forretaining form sheets in true right-angular relationship which may beinstalled and taken apart with a minimum amount of labor.

it is a further object to provide novel means for preventing thecontiguous edges of juxtaposed form sheets from separatlng.

For the purpose of further explaining my invention, 1 shall now describepresently preferred embodiments thereof by reference to the accompanyingdrawing wherein:

FIG. 1 is an elevational view, partly in section, showing one of myconcrete form sheet retaining assemblies attached to a form;

FIG. 2 is a section taken on line 22 of FIG. 1;

FIG. 3 is a view similar to HO. 1 but showing a variational form of theassembly; and

FIG. 4 is a side elevational view of a rivet employed in my assembly.

Referring now to the drawing (FIG. 1), the numeral 5 designates aconventional metallic form sheet for molding the inner or exposedsurface of the ceiling of a building structure; and the numeral 6designates a conventional form sheet for molding the inner surface of asidewall of the building structure. It will be understood, of course,that, conventionally, there are outer form sheets (not shown) mounted inspacedparallel relationship to the inner sheets whereby to providetherebetween a conventional chamber for receiving the wet concrete mixin the construction of the building.

My novel yoke member comprises a metal yoke having right-angularlydisposed legs 10 and 11. Leg 11 has a longitudinal, tapered slot 14 toreceive and pass the shank portion 150 of a rivet 15 (FIG. 3) whoseinner end portion 15b is larger in diameter than the portion 15a of therivet.

A rectangular metallic retaining strip has its end portions disposed tobe secured to the inner surface of the form sheet 6 as by riveting orwelding, it being here shown as riveted. Intermediate its ends, theretaining strip is outwardly bent to provide a passageway for the leg 11of the yoke.

The rivet 15 has an enlarged diameter headed portion 15b at its innerend; a portion 15a between its ends, of relatively smaller diameter,preferably of a diameter equal to the thickness of the yoke leg II; andhas a relatively smaller diameter outer end portion 15: adapted to beinserted through a rivet hole (not shown) in the sheet 6 and adapted tobe headed at its outer end to prevent the rivet from escaping from therivet hole.

Ordinarily, before the form sheets are assembled, the portion 10 of theyoke is secured to the inner surface of the form sheet 5 and theretaining strip 20 is secured only at its end portions to the form sheet6, and the rivet 15 is mounted on the form sheet 6 in the appropriateposition in relation to the slot 14. Thus the form may be readily andquickly assembled and secured in assembly by inserting the yoke leg IIthrough the passageway provided by the retaining strip 20. Of course,any desired number of the yoke assemblies may be employed, the purposebeing to employ enough yoke assemblies positively to retain the formsheets 5 and 6 firmly asembled in true rightangular relationship.

it the embodiment of FIG. 2, the parts are the same except that thereare two juxtaposed wall-molding sheets 6 and 7 which must be retainedagainst spreading apart during the pouring and setting of the concretemix; and the leg ll of the yoke is relatively wide and has two laterallyspaced slots Ha, 14b, those slots being so positioned that there will beone slot in the portion of the yoke leg 11 which engages the form sheet6 and one slot in the portion of the yoke leg which engages thejuxtaposed form sheet 7.

lclaim:

1. In a form sheet assembly having a first and second form sheet forintegrally molding right-singularly disposed concrete wall portions of abuilding structure:

a. a rectangular metallic strip affixed to the first of said form sheetsonly at its end portions, said strip being outwardly bent intermediateits end portions so as to form a passageway therebetween;

b. a rivet anchored at its outer end to said first form sheet projectinginwardly therefrom, said rivet having a shank portion and an enlargedheaded portion at its inner end; and

c. a yoke member adapted to cooperate with said metallic strip and saidrivet comprising:

l. a first leg portion affixed to said second form sheet; and

2. a second leg portion disposed at right angles to said first legportion, said second leg portion having a thickness substantially equalto the shank portion of said rivet, having a tapered slot adapted topass over the shank portion of said rivet and being so constructed andarranged as to be slidably receivable within the passageway of saidrectangular metallic strip when said strip is in position.

2. The device of claim I wherein the first of said sheets is comprisedof separate juxtaposed sheet portions each presenting one of saidrivets; and wherein said second leg portion of said first-mentioned yokemember has two laterally spaced, longitudinally disposed slotspositioned to slidably receive said respective rivets.

1. In a form sheet assembly having a first and second form sheet forintegrally molding right-angularly disposed concrete wall portions of abuilding structure: a. a rectangular metallic strip affixed to the firstof said form sheets only at its end portions, said strip being outwardlybent intermediate its end portions so as to form a passagewaytherebetween; b. a rivet anchored at its outer end to said first formsheet projecting inwardly therefrom, said rivet having a shank portionand an enlarged headed portion at its inner end; and c. a yoke memberadapted to cooperate with said metallic strip and said rivetcomprising:
 1. a first leg portion affixed to said second form sheet;and
 2. a second leg portion disposed at right angles to said first legportion, said second leg portion having a thickness substantially equalto the shank portion of said rivet, having a tapered slot adapted topass over the shank portion of said rivet and being so constructed andarranged as to be slidably receivable within the passageway of saidrectangular metallic strip when said strip is in position.
 2. a secondleg portion disposed at right angles to said first leg portion, saidsecond leg portion having a thickness substantially equal to the shankportion of said rivet, having a tapered slot adapted to pass over theshank portion of said rivet and being so constructed and arranged as tobe slidably receivable within the passageway of said rectangularmetallic strip when said strip is in position.
 2. The device of claim 1wherein the first of said sheets is comprised of separate juxtaposedsheet portions each presenting one of said rivets; and wherein saidsecond leg portion of said first-mentioned yoke member has two laterallyspaced, longitudinally disposed slots positioned to slidably receivesaid respective rivets.